Dieppe Le Tréport Export
OperationalOffshore GridFR496 MW225 kV26.5 km2026
Basic information
8 fieldsAlso Known As
Dieppe–Le Tréport offshore grid connection · TRE export cable system · Parc éolien en mer de Dieppe-Le Tréport raccordement · EMDT export connection
Status
operational
Capacity
496 MW
Project Company
Type
offshore grid
Transmission Model
TSO Build & Own
Website
Supply Chain (1)
Project Timeline (7)
3 Feb 2026Commercial Operations Full Power
On 3 February 2026, Nexans officially handed over both 225 kV HVAC export cable circuits connecting the Dieppe–Le Tréport offshore wind farm to the French transmission grid to RTE, marking formal completion of its four‑year turnkey delivery scope. The handover confirmed that the full export cable system for the project had been delivered, tested and accepted, establishing the final link between the offshore wind farm and the French transmission network and transitioning the asset into its long‑term operational and maintenance phase.
25 Sept 2025Cable Installation Complete
By late September 2025, Nexans had completed the final export cable installation campaign for the Dieppe–Le Tréport Export system, installing both 225 kV HVAC export cable circuits to the offshore substation and concluding the last cable installation phase needed to connect the wind farm to the French transmission grid.
21 Apr 2025Cable Installation Start
RTE’s 20 May 2025 press release on the Dieppe–Le Tréport offshore wind farm grid connection states that the first subsea export cable installation operation was carried out on 21 April 2025 by the cable‑laying vessel Skagerrak, followed by the second cable on 11 May 2025. This marks the actual start of subsea export cable installation for the Dieppe Le Tréport Export project, later than the original projection in July 2024.
17 Mar 2022Cable Supplier Selected
On 17 March 2022, French TSO Réseau de Transport d’Électricité (RTE) awarded Nexans a contract worth around EUR 100 million to supply and install the 225 kV export cable system for the Dieppe–Le Tréport offshore wind farm grid connection. Under this turnkey deal, Nexans will deliver two 23.5 km subsea three-core 225 kV cables and 18 km of 225 kV onshore cables (47 km offshore and 18 km onshore in total), including installation, burial and protection, plus long‑term inspection, maintenance and repair services, thereby providing the full export link between the offshore substation and the French onshore grid for the 496 MW project.
Date TBDPlanning Consent Awarded
Authority: Regional authorities (France) · Licence: Maritime public domain concession, environmental law consents and protected-species exemptions for the grid connection
Regional authorities granted key consents for the Dieppe Le Tréport project, including a concession to use the maritime public domain, environmental law consents, and exemptions for certain protected species, and issued similar authorisations to RTE for the grid connection, enabling the regulated export cable and associated works to proceed.
Date TBDOffshore Site Preparation
As part of a recent installation campaign for the Dieppe–Le Tréport Export system, Nexans completed offshore site preparation works for RTE, including preparation of the export cable route and excavation of subsea nearshore trenches prior to cable laying and burial.
Date TBDCable Landfall Complete
During the same installation campaign, Nexans carried out and completed the landfall operations for the Dieppe–Le Tréport Export connection by floating the export cable into position, pulling it ashore through a pre-installed duct to the transition joint bay, and aligning it with the pre-dug subsea trench.